nfsv41: remove unused Layouts class

Not used as the functionality is handles by implementations of
LayoutDriver interface.

Acked-by: Lea Morschel
Acked-by: Paul Millar
Acked-by: Albert Rossi
Target: master
1 job for master in 1 minute and 17 seconds (queued for 23 seconds)
Status Name Job ID Coverage
  Build
passed build #12686

00:01:17